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| <section id="module-datafusion.ipc"> |
| <span id="datafusion-ipc"></span><h1>datafusion.ipc<a class="headerlink" href="#module-datafusion.ipc" title="Link to this heading">#</a></h1> |
| <p>Driver- and worker-side setup for distributing DataFusion expressions.</p> |
| <p>When a <code class="xref py py-class docutils literal notranslate"><span class="pre">Expr</span></code> is shipped to a worker process (e.g. through |
| <code class="xref py py-func docutils literal notranslate"><span class="pre">multiprocessing.Pool()</span></code> or a Ray actor), the worker reconstructs the |
| expression against a <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>. If the expression references |
| UDFs imported via the FFI capsule protocol — or any UDF the worker would |
| otherwise resolve from its registered functions rather than from inside |
| the shipped expression — install a configured <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> |
| once per worker:</p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span> |
| <span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">set_worker_ctx</span> |
| |
| <span class="k">def</span><span class="w"> </span><span class="nf">init_worker</span><span class="p">():</span> |
| <span class="n">ctx</span> <span class="o">=</span> <span class="n">SessionContext</span><span class="p">()</span> |
| <span class="n">ctx</span><span class="o">.</span><span class="n">register_udaf</span><span class="p">(</span><span class="n">my_ffi_aggregate</span><span class="p">)</span> |
| <span class="n">set_worker_ctx</span><span class="p">(</span><span class="n">ctx</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Built-in functions and Python UDFs (scalar, aggregate, window) travel |
| inside the shipped expression itself and do not need pre-registration |
| on the worker.</p> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p>Serialization model</p> |
| <p>Expressions containing Python UDFs (scalar, aggregate, window) are |
| serialized using <code class="xref py py-mod docutils literal notranslate"><span class="pre">cloudpickle</span></code>. The callable itself travels |
| <strong>by value</strong> (bytecode and closure cells inlined), but any names the |
| callable resolves via <code class="docutils literal notranslate"><span class="pre">import</span></code> are captured <strong>by reference</strong> and |
| must be importable on the receiving worker.</p> |
| <p>The serialized payload is stamped with the sender’s Python |
| <code class="docutils literal notranslate"><span class="pre">(major,</span> <span class="pre">minor)</span></code> version. Loading on a different minor version |
| raises <code class="xref py py-class docutils literal notranslate"><span class="pre">ValueError</span></code> with an actionable message — cloudpickle |
| payloads are not portable across Python minor versions. See |
| <a class="reference internal" href="../index.html#datafusion.Expr.to_bytes" title="datafusion.Expr.to_bytes"><code class="xref py py-meth docutils literal notranslate"><span class="pre">datafusion.Expr.to_bytes()</span></code></a> for examples of what travels by |
| value vs. by reference.</p> |
| </div> |
| <p>On the driver side, call <a class="reference internal" href="#datafusion.ipc.set_sender_ctx" title="datafusion.ipc.set_sender_ctx"><code class="xref py py-func docutils literal notranslate"><span class="pre">set_sender_ctx()</span></code></a> to control how |
| <code class="xref py py-func docutils literal notranslate"><span class="pre">pickle.dumps()</span></code> encodes expressions — for example, to apply |
| <code class="xref py py-meth docutils literal notranslate"><span class="pre">SessionContext.with_python_udf_inlining()</span></code> to every pickled |
| expression on this thread:</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">import</span><span class="w"> </span><span class="nn">pickle</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span><span class="p">,</span> <span class="n">col</span><span class="p">,</span> <span class="n">lit</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">clear_sender_ctx</span><span class="p">,</span> <span class="n">set_sender_ctx</span> |
| <span class="gp">>>> </span><span class="n">driver_ctx</span> <span class="o">=</span> <span class="n">SessionContext</span><span class="p">()</span><span class="o">.</span><span class="n">with_python_udf_inlining</span><span class="p">(</span><span class="n">enabled</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">set_sender_ctx</span><span class="p">(</span><span class="n">driver_ctx</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="k">try</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="n">blob</span> <span class="o">=</span> <span class="n">pickle</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">col</span><span class="p">(</span><span class="s2">"a"</span><span class="p">)</span> <span class="o">+</span> <span class="n">lit</span><span class="p">(</span><span class="mi">1</span><span class="p">))</span> |
| <span class="gp">... </span><span class="k">finally</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="n">clear_sender_ctx</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="nb">isinstance</span><span class="p">(</span><span class="n">blob</span><span class="p">,</span> <span class="nb">bytes</span><span class="p">)</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| <p>Without a sender context the default codec is used (Python UDF |
| inlining on). The sender context only affects pickle / <code class="docutils literal notranslate"><span class="pre">to_bytes</span></code> |
| encoding; explicit <code class="docutils literal notranslate"><span class="pre">expr.to_bytes(ctx)</span></code> calls still use the supplied |
| <code class="docutils literal notranslate"><span class="pre">ctx</span></code>.</p> |
| <p>The thread-local sender context holds a strong reference to the |
| installed <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> until <a class="reference internal" href="#datafusion.ipc.clear_sender_ctx" title="datafusion.ipc.clear_sender_ctx"><code class="xref py py-func docutils literal notranslate"><span class="pre">clear_sender_ctx()</span></code></a> is |
| called or the thread exits. Long-running driver threads that install a sender |
| context once and never clear it will retain that session for the |
| lifetime of the thread; pair <a class="reference internal" href="#datafusion.ipc.set_sender_ctx" title="datafusion.ipc.set_sender_ctx"><code class="xref py py-func docutils literal notranslate"><span class="pre">set_sender_ctx()</span></code></a> with |
| <a class="reference internal" href="#datafusion.ipc.clear_sender_ctx" title="datafusion.ipc.clear_sender_ctx"><code class="xref py py-func docutils literal notranslate"><span class="pre">clear_sender_ctx()</span></code></a> (e.g. in a <code class="docutils literal notranslate"><span class="pre">try</span></code>/<code class="docutils literal notranslate"><span class="pre">finally</span></code>) when the |
| sender context is only needed for a bounded scope.</p> |
| <section id="functions"> |
| <h2>Functions<a class="headerlink" href="#functions" title="Link to this heading">#</a></h2> |
| <div class="pst-scrollable-table-container"><table class="autosummary longtable table autosummary"> |
| <tbody> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#datafusion.ipc.clear_sender_ctx" title="datafusion.ipc.clear_sender_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">clear_sender_ctx</span></code></a>(→ None)</p></td> |
| <td><p>Remove this driver's installed sender <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#datafusion.ipc.clear_worker_ctx" title="datafusion.ipc.clear_worker_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">clear_worker_ctx</span></code></a>(→ None)</p></td> |
| <td><p>Remove this worker's installed <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#datafusion.ipc.get_sender_ctx" title="datafusion.ipc.get_sender_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_sender_ctx</span></code></a>(→ datafusion.context.SessionContext | None)</p></td> |
| <td><p>Return this driver's installed sender <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#datafusion.ipc.get_worker_ctx" title="datafusion.ipc.get_worker_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">get_worker_ctx</span></code></a>(→ datafusion.context.SessionContext | None)</p></td> |
| <td><p>Return this worker's installed <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#datafusion.ipc.set_sender_ctx" title="datafusion.ipc.set_sender_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">set_sender_ctx</span></code></a>(→ None)</p></td> |
| <td><p>Install this driver's <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> for outbound pickles.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#datafusion.ipc.set_worker_ctx" title="datafusion.ipc.set_worker_ctx"><code class="xref py py-obj docutils literal notranslate"><span class="pre">set_worker_ctx</span></code></a>(→ None)</p></td> |
| <td><p>Install this worker's <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> for shipped expressions.</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </section> |
| <section id="module-contents"> |
| <h2>Module Contents<a class="headerlink" href="#module-contents" title="Link to this heading">#</a></h2> |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.clear_sender_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">clear_sender_ctx</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.clear_sender_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Remove this driver’s installed sender <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>.</p> |
| <p>After clearing, pickled expressions fall back to the default codec |
| (Python UDF inlining on).</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="p">(</span> |
| <span class="gp">... </span> <span class="n">set_sender_ctx</span><span class="p">,</span> <span class="n">clear_sender_ctx</span><span class="p">,</span> <span class="n">get_sender_ctx</span><span class="p">,</span> |
| <span class="gp">... </span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">set_sender_ctx</span><span class="p">(</span><span class="n">SessionContext</span><span class="p">())</span> |
| <span class="gp">>>> </span><span class="n">clear_sender_ctx</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">get_sender_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.clear_worker_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">clear_worker_ctx</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.clear_worker_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Remove this worker’s installed <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>.</p> |
| <p>After clearing, expressions reconstructed in this worker fall back to |
| the global <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> — adequate for built-ins and Python |
| UDFs (scalar, aggregate, window), but anything imported via the FFI |
| capsule protocol must be registered on the global context to resolve.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">set_worker_ctx</span><span class="p">,</span> <span class="n">clear_worker_ctx</span><span class="p">,</span> <span class="n">get_worker_ctx</span> |
| <span class="gp">>>> </span><span class="n">set_worker_ctx</span><span class="p">(</span><span class="n">SessionContext</span><span class="p">())</span> |
| <span class="gp">>>> </span><span class="n">clear_worker_ctx</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">get_worker_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.get_sender_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">get_sender_ctx</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../context/index.html#datafusion.context.SessionContext" title="datafusion.context.SessionContext"><span class="pre">datafusion.context.SessionContext</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.get_sender_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Return this driver’s installed sender <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">get_sender_ctx</span><span class="p">,</span> <span class="n">clear_sender_ctx</span> |
| <span class="gp">>>> </span><span class="n">clear_sender_ctx</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">get_sender_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.get_worker_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">get_worker_ctx</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../context/index.html#datafusion.context.SessionContext" title="datafusion.context.SessionContext"><span class="pre">datafusion.context.SessionContext</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.get_worker_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Return this worker’s installed <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">get_worker_ctx</span><span class="p">,</span> <span class="n">clear_worker_ctx</span> |
| <span class="gp">>>> </span><span class="n">clear_worker_ctx</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">get_worker_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.set_sender_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">set_sender_ctx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">ctx</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="../context/index.html#datafusion.context.SessionContext" title="datafusion.context.SessionContext"><span class="pre">datafusion.context.SessionContext</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.set_sender_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Install this driver’s <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> for outbound pickles.</p> |
| <p>Controls how <code class="xref py py-func docutils literal notranslate"><span class="pre">pickle.dumps()</span></code> encodes <code class="xref py py-class docutils literal notranslate"><span class="pre">Expr</span></code> instances on |
| this thread. The most useful application is propagating a session |
| configured with |
| <code class="xref py py-meth docutils literal notranslate"><span class="pre">SessionContext.with_python_udf_inlining()</span></code> so the toggle takes |
| effect through pickle (which otherwise calls |
| <code class="xref py py-meth docutils literal notranslate"><span class="pre">Expr.to_bytes()</span></code> with no context and uses the default codec).</p> |
| <p>Idempotent: overwrites any previous value. Stored in a thread-local |
| slot, so worker threads on the driver may install their own contexts. |
| Does not affect <code class="xref py py-meth docutils literal notranslate"><span class="pre">Expr.to_bytes()</span></code> calls that pass an explicit |
| <code class="docutils literal notranslate"><span class="pre">ctx</span></code> — those continue to use the supplied context.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">set_sender_ctx</span><span class="p">,</span> <span class="n">get_sender_ctx</span> |
| <span class="gp">>>> </span><span class="n">driver</span> <span class="o">=</span> <span class="n">SessionContext</span><span class="p">()</span><span class="o">.</span><span class="n">with_python_udf_inlining</span><span class="p">(</span><span class="n">enabled</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">set_sender_ctx</span><span class="p">(</span><span class="n">driver</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">get_sender_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="n">driver</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="py function"> |
| <dt class="sig sig-object py" id="datafusion.ipc.set_worker_ctx"> |
| <span class="sig-prename descclassname"><span class="pre">datafusion.ipc.</span></span><span class="sig-name descname"><span class="pre">set_worker_ctx</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">ctx</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="../context/index.html#datafusion.context.SessionContext" title="datafusion.context.SessionContext"><span class="pre">datafusion.context.SessionContext</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#datafusion.ipc.set_worker_ctx" title="Link to this definition">#</a></dt> |
| <dd><p>Install this worker’s <code class="xref py py-class docutils literal notranslate"><span class="pre">SessionContext</span></code> for shipped expressions.</p> |
| <p>Call once per worker — typically from a <code class="docutils literal notranslate"><span class="pre">multiprocessing.Pool</span></code> |
| initializer or a Ray actor <code class="docutils literal notranslate"><span class="pre">__init__</span></code>. Idempotent: overwrites any |
| previous value. Stored in a thread-local slot, so each thread within a |
| worker may install its own context independently.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion</span><span class="w"> </span><span class="kn">import</span> <span class="n">SessionContext</span> |
| <span class="gp">>>> </span><span class="kn">from</span><span class="w"> </span><span class="nn">datafusion.ipc</span><span class="w"> </span><span class="kn">import</span> <span class="n">set_worker_ctx</span><span class="p">,</span> <span class="n">get_worker_ctx</span><span class="p">,</span> <span class="n">clear_worker_ctx</span> |
| <span class="gp">>>> </span><span class="n">set_worker_ctx</span><span class="p">(</span><span class="n">SessionContext</span><span class="p">())</span> |
| <span class="gp">>>> </span><span class="n">get_worker_ctx</span><span class="p">()</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="n">clear_worker_ctx</span><span class="p">()</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
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| <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#datafusion.ipc.clear_sender_ctx"><code class="docutils literal notranslate"><span class="pre">clear_sender_ctx()</span></code></a></li> |
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